Annotation of parser3/src/main/pa_request.C, revision 1.375
1.54 paf 1: /** @file
1.55 paf 2: Parser: request class main part. @see compile.C and execute.C.
3:
1.374 moko 4: Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com)
1.194 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.218 paf 6: */
1.55 paf 7:
1.69 paf 8: #include "pa_sapi.h"
1.53 paf 9: #include "pa_common.h"
1.372 moko 10: #include "pa_os.h"
1.1 paf 11: #include "pa_request.h"
1.3 paf 12: #include "pa_wwrapper.h"
13: #include "pa_vclass.h"
1.31 paf 14: #include "pa_globals.h"
1.30 paf 15: #include "pa_vint.h"
1.297 misha 16: #include "pa_vmethod_frame.h"
1.32 paf 17: #include "pa_types.h"
1.248 paf 18: #include "pa_venv.h"
19: #include "pa_vmath.h"
20: #include "pa_vstatus.h"
21: #include "pa_vrequest.h"
1.78 paf 22: #include "pa_vtable.h"
1.90 paf 23: #include "pa_vfile.h"
1.147 parser 24: #include "pa_dictionary.h"
1.208 paf 25: #include "pa_charset.h"
1.186 paf 26: #include "pa_charsets.h"
1.248 paf 27: #include "pa_cache_managers.h"
28: #include "pa_vmail.h"
29: #include "pa_vform.h"
30: #include "pa_vcookie.h"
31: #include "pa_vresponse.h"
32: #include "pa_vmemory.h"
1.253 paf 33: #include "pa_vconsole.h"
1.267 paf 34: #include "pa_vdate.h"
1.159 parser 35:
1.375 ! moko 36: volatile const char * IDENT_PA_REQUEST_C="$Id: pa_request.C,v 1.374 2017/02/07 22:00:44 moko Exp $" IDENT_PA_REQUEST_H IDENT_PA_REQUEST_CHARSETS_H IDENT_PA_REQUEST_INFO_H IDENT_PA_VCONSOLE_H;
1.329 moko 37:
1.248 paf 38: // consts
39:
1.269 paf 40: #define UNHANDLED_EXCEPTION_METHOD_NAME "unhandled_exception"
1.207 paf 41:
1.82 paf 42: /// content type of exception response, when no @MAIN:exception handler defined
1.248 paf 43: const char* UNHANDLED_EXCEPTION_CONTENT_TYPE="text/plain";
1.82 paf 44:
45: /// content type of response when no $MAIN:defaults.content-type defined
1.248 paf 46: const char* DEFAULT_CONTENT_TYPE="text/html";
47:
1.369 moko 48: const uint LOOP_LIMIT=20000;
1.361 moko 49: const uint EXECUTE_RECOURSION_LIMIT=1000;
1.369 moko 50: const size_t FILE_SIZE_LIMIT=512*1024*1024;
1.361 moko 51:
1.248 paf 52: // defines for globals
53:
54: #define MAIN_METHOD_NAME "main"
55: #define AUTO_METHOD_NAME "auto"
1.364 moko 56: #define USE_METHOD_NAME "use"
1.309 misha 57: #define AUTOUSE_METHOD_NAME "autouse"
1.364 moko 58:
1.248 paf 59: #define EXCEPTION_TYPE_PART_NAME "type"
60: #define EXCEPTION_SOURCE_PART_NAME "source"
61: #define EXCEPTION_COMMENT_PART_NAME "comment"
62:
1.364 moko 63: #define ORIGIN_KEY "origin"
64:
1.248 paf 65: // globals
66:
67: const String main_method_name(MAIN_METHOD_NAME);
68: const String auto_method_name(AUTO_METHOD_NAME);
1.364 moko 69: static const String use_method_name(USE_METHOD_NAME);
70: static const String autouse_method_name(AUTOUSE_METHOD_NAME);
1.311 misha 71:
1.248 paf 72: const String exception_type_part_name(EXCEPTION_TYPE_PART_NAME);
73: const String exception_source_part_name(EXCEPTION_SOURCE_PART_NAME);
74: const String exception_comment_part_name(EXCEPTION_COMMENT_PART_NAME);
75: const String exception_handled_part_name(EXCEPTION_HANDLED_PART_NAME);
76:
1.364 moko 77: static const String origin_key(ORIGIN_KEY);
78:
1.369 moko 79: int pa_loop_limit=LOOP_LIMIT;
1.361 moko 80: int pa_execute_recoursion_limit=EXECUTE_RECOURSION_LIMIT;
1.369 moko 81: size_t pa_file_size_limit=FILE_SIZE_LIMIT;
1.361 moko 82:
1.248 paf 83: // defines for statics
84:
85: #define CHARSETS_NAME "CHARSETS"
86: #define MIME_TYPES_NAME "MIME-TYPES"
1.330 moko 87: #define STRICT_VARS_NAME "STRICT-VARS"
1.357 moko 88: #define PROTOTYPE_NAME "OBJECT-PROTOTYPE"
1.362 moko 89: #define LIMITS_NAME "LIMITS"
1.369 moko 90: #define LOOP_LIMIT_NAME "max_loop"
1.362 moko 91: #define RECOURSION_LIMIT_NAME "max_recoursion"
1.369 moko 92: #define FILE_SIZE_LIMIT_NAME "max_file_size"
1.373 moko 93: #define LOCK_WAIT_TIMEOUT_NAME "lock_wait_timeout"
1.248 paf 94: #define CONF_METHOD_NAME "conf"
95: #define POST_PROCESS_METHOD_NAME "postprocess"
96: #define CLASS_PATH_NAME "CLASS_PATH"
1.277 paf 97: #define RESPONSE_BODY_FILE_NAME "file"
1.248 paf 98:
1.344 moko 99: #define DOWNLOAD_NAME_UPPER "DOWNLOAD"
100: #define BODY_NAME_UPPER "BODY"
101:
1.248 paf 102: // statics
103:
104: static const String charsets_name(CHARSETS_NAME);
105: static const String main_class_name(MAIN_CLASS_NAME);
106: static const String mime_types_name(MIME_TYPES_NAME);
1.330 moko 107: static const String strict_vars_name(STRICT_VARS_NAME);
1.357 moko 108: static const String prototype_name(PROTOTYPE_NAME);
1.362 moko 109: static const String limits_name(LIMITS_NAME);
1.369 moko 110: static const String loop_limit_name(LOOP_LIMIT_NAME);
1.361 moko 111: static const String recoursion_limit_name(RECOURSION_LIMIT_NAME);
1.369 moko 112: static const String file_size_limit_name(FILE_SIZE_LIMIT_NAME);
1.373 moko 113: static const String lock_wait_timeout_name(LOCK_WAIT_TIMEOUT_NAME);
1.361 moko 114:
1.248 paf 115: static const String conf_method_name(CONF_METHOD_NAME);
116: static const String post_process_method_name(POST_PROCESS_METHOD_NAME);
117: static const String class_path_name(CLASS_PATH_NAME);
1.277 paf 118: static const String response_body_file_name(RESPONSE_BODY_FILE_NAME);
1.248 paf 119:
1.344 moko 120: static const String download_name_upper(DOWNLOAD_NAME_UPPER);
121: static const String body_name_upper(BODY_NAME_UPPER);
122:
123: // more static
124:
125: static const String content_type_name_upper(HTTP_CONTENT_TYPE_UPPER);
126: static const String content_disposition_name_upper(CONTENT_DISPOSITION_UPPER);
127: static const String content_disposition_inline(CONTENT_DISPOSITION_INLINE);
128: static const String content_disposition_attachment(CONTENT_DISPOSITION_ATTACHMENT);
129:
1.248 paf 130: // defines
1.82 paf 131:
1.344 moko 132: #define CHARSET_NAME_UPPER "CHARSET"
133: #define LAST_MODIFIED_NAME_UPPER "LAST-MODIFIED"
134:
1.233 paf 135: // op.C
1.248 paf 136: VStateless_class& VClassMAIN_create();
1.123 paf 137:
1.157 parser 138: //
1.248 paf 139: Request::Request(SAPI_Info& asapi_info, Request_info& arequest_info,
1.325 moko 140: String::Language adefault_lang):
1.248 paf 141: // private
142: anti_endless_execute_recoursion(0),
143:
144: // public
1.335 moko 145: allow_class_replace(false),
1.248 paf 146: method_frame(0),
147: rcontext(0),
148: wcontext(0),
149: flang(adefault_lang),
1.191 paf 150: fconnection(0),
1.371 moko 151: fin_cycle(0),
1.307 misha 152: fskip(SKIP_NOTHING),
1.248 paf 153:
154: // public
1.257 paf 155: request_info(arequest_info),
1.248 paf 156: sapi_info(asapi_info),
1.359 moko 157: charsets(pa_UTF8_charset, pa_UTF8_charset, pa_UTF8_charset), // default charsets
1.248 paf 158:
159: main_class(VClassMAIN_create()),
1.260 paf 160: form(*new VForm(charsets, arequest_info)),
1.248 paf 161: mail(*new VMail),
162: response(*new VResponse(arequest_info, charsets)),
1.298 misha 163: cookie(*new VCookie(charsets, arequest_info)),
1.285 misha 164: console(*new VConsole),
1.248 paf 165:
166: // private
167: configure_admin_done(false),
168:
169: // private defaults
170: fdefault_lang(adefault_lang),
171: // private mime types
172: mime_types(0)
1.157 parser 173: {
1.261 paf 174: pa_register_thread_request(*this);
175:
1.248 paf 176: // file_no=0 => unknown
1.347 moko 177: file_list+="UNKNOWN";
178: file_list+="-body of process-"; // pseudo_file_no__process
1.186 paf 179:
1.178 paf 180: // maybe expire old caches
1.264 paf 181: cache_managers->maybe_expire();
1.178 paf 182:
1.157 parser 183: /// directly used
1.233 paf 184: // MAIN class, operators
1.353 moko 185: put_class(&main_class);
1.157 parser 186: // classes:
187: // table, file, random, mail, image, ...
1.248 paf 188: methoded_array().register_directly_used(*this);
1.157 parser 189:
190: /// methodless
1.354 moko 191:
1.157 parser 192: // env class
1.353 moko 193: put_class(new VEnv(asapi_info));
1.175 paf 194: // status class
1.353 moko 195: put_class(new VStatus());
1.157 parser 196: // request class
1.353 moko 197: put_class(new VRequest(arequest_info, charsets, form, asapi_info));
1.157 parser 198: // cookie class
1.353 moko 199: put_class(&cookie);
1.253 paf 200: // console class
1.353 moko 201: put_class(&console);
1.354 moko 202:
1.157 parser 203: /// methoded
1.354 moko 204:
1.157 parser 205: // response class
1.353 moko 206: put_class(&response);
1.157 parser 207: // form class
1.353 moko 208: put_class(&form);
1.213 paf 209: // mail class
1.353 moko 210: put_class(&mail);
1.157 parser 211: // math class
1.353 moko 212: put_class(new VMath);
1.248 paf 213: // memory class
1.353 moko 214: put_class(new VMemory);
1.117 paf 215: }
1.192 paf 216:
217: Request::~Request() {
218: #ifdef XML
219: // if for some strange reason xml generic errors failed to be reported, free them up
1.248 paf 220: if(const char* xml_generic_errors=xmlGenericErrors()) {
221: SAPI::log(sapi_info, "warning: unreported xmlGenericErrors: %s", xml_generic_errors);
1.341 moko 222: pa_free((void *)xml_generic_errors);
1.192 paf 223: }
224: #endif
225: }
1.236 paf 226:
1.248 paf 227: Value& Request::get_self() { return method_frame/*always have!*/->self(); }
1.192 paf 228:
1.355 moko 229: VStateless_class* Request::get_class(const String& name){
230: VStateless_class* result=classes().get(name);
1.313 misha 231: if(!result)
1.375 ! moko 232: if(const Method *method=main_class.get_element_method(autouse_method_name)){
1.364 moko 233: Value *vname=new VString(name);
234: CONSTRUCTOR_FRAME_ACTION(*method, 0 /*no parent*/, main_class, {
235: frame.store_params(&vname, 1);
236: // we don't need the result
237: call(frame);
238: });
239: result=classes().get(name);
240: }
1.309 misha 241: return result;
242: }
243:
1.356 moko 244: static void load_charset(HashStringValue::key_type akey, HashStringValue::value_type avalue, Request_charsets* charsets) {
1.359 moko 245: pa_charsets.load_charset(*charsets, akey, avalue->as_string());
1.208 paf 246: }
1.356 moko 247:
1.248 paf 248: void Request::configure_admin(VStateless_class& conf_class) {
1.208 paf 249: if(configure_admin_done)
1.356 moko 250: throw Exception(PARSER_RUNTIME, 0, "parser already configured");
1.208 paf 251: configure_admin_done=true;
252:
1.227 paf 253: // charsets must only be specified in method_frame config
1.208 paf 254: // so that users would not interfere
255:
256: /* $MAIN:CHARSETS[
257: $.charsetname1[/full/path/to/charset/file.cfg]
258: ...
259: ]
260: */
1.308 misha 261: if(Value* vcharsets=conf_class.get_element(charsets_name)) {
1.342 moko 262: if(!vcharsets->is_string()) {
1.248 paf 263: if(HashStringValue* charsets=vcharsets->get_hash())
1.281 paf 264: charsets->for_each<Request_charsets*>(load_charset, &this->charsets);
1.240 paf 265: else
1.356 moko 266: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":" CHARSETS_NAME " must be hash");
1.342 moko 267: }
1.208 paf 268: }
269:
1.330 moko 270: #ifdef STRICT_VARS
1.332 moko 271: VVoid::strict_vars=false;
1.330 moko 272: if(Value* strict_vars=conf_class.get_element(strict_vars_name)) {
273: if(strict_vars->is_bool())
274: VVoid::strict_vars=strict_vars->as_bool();
1.357 moko 275: else
276: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":" STRICT_VARS_NAME " must be bool");
277: }
278: #endif
279:
280: #ifdef OBJECT_PROTOTYPE
281: VClass::prototype=true;
282: if(Value* prototype=conf_class.get_element(prototype_name)) {
283: if(prototype->is_bool())
284: VClass::prototype=prototype->as_bool();
285: else
286: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":" PROTOTYPE_NAME " must be bool");
1.330 moko 287: }
288: #endif
289:
1.362 moko 290: Value* limits=conf_class.get_element(limits_name);
291:
1.361 moko 292: pa_loop_limit=LOOP_LIMIT;
1.362 moko 293: if(limits)
294: if(Value* loop_limit=limits->get_element(loop_limit_name)) {
295: if(loop_limit->is_evaluated_expr()) {
296: pa_loop_limit=loop_limit->as_int();
297: if(pa_loop_limit==0) pa_loop_limit=INT_MAX;
298: } else
1.369 moko 299: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":LIMITS." LOOP_LIMIT_NAME " must be int");
1.362 moko 300: }
1.361 moko 301:
302: pa_execute_recoursion_limit=EXECUTE_RECOURSION_LIMIT;
1.362 moko 303: if(limits)
304: if(Value* recoursion_limit=limits->get_element(recoursion_limit_name)) {
305: if(recoursion_limit->is_evaluated_expr()) {
306: pa_execute_recoursion_limit=recoursion_limit->as_int();
307: if(pa_execute_recoursion_limit==0) pa_execute_recoursion_limit=INT_MAX;
308: } else
1.369 moko 309: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":LIMITS." RECOURSION_LIMIT_NAME " must be int");
310: }
311:
312: pa_file_size_limit=FILE_SIZE_LIMIT;
313: if(limits)
314: if(Value* file_size_limit=limits->get_element(file_size_limit_name)) {
315: if(file_size_limit->is_evaluated_expr()) {
316: double limit=file_size_limit->as_double();
317: if(limit >= (double)SSIZE_MAX)
318: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":LIMITS." FILE_SIZE_LIMIT_NAME " must be less then %.15g", (double)SSIZE_MAX);
319: pa_file_size_limit=(size_t)limit;
320: if(pa_file_size_limit==0) pa_file_size_limit=SSIZE_MAX;
321: } else
322: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":LIMITS." FILE_SIZE_LIMIT_NAME " must be number");
1.362 moko 323: }
1.361 moko 324:
1.372 moko 325: pa_lock_attempts=PA_LOCK_ATTEMPTS;
326: if(limits)
1.373 moko 327: if(Value* lock_wait_timeout=limits->get_element(lock_wait_timeout_name)) {
328: if(lock_wait_timeout->is_evaluated_expr()) {
329: double limit=lock_wait_timeout->as_double();
1.372 moko 330: if(limit >= 3600*24)
1.373 moko 331: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":LIMITS." LOCK_WAIT_TIMEOUT_NAME " must be less then %d", 3600*24);
1.372 moko 332: pa_lock_attempts=(unsigned int)(limit*2)+1;
333: } else
1.373 moko 334: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":LIMITS." LOCK_WAIT_TIMEOUT_NAME " must be number");
1.372 moko 335: }
336:
1.227 paf 337: // configure method_frame options
1.208 paf 338: // until someone with less privileges have overriden them
1.248 paf 339: methoded_array().configure_admin(*this);
1.208 paf 340: }
1.150 parser 341:
1.349 moko 342: const char* Request::get_exception_cstr(const Exception& e, Request::Exception_details& details) {
343:
1.269 paf 344: #define PA_URI_FORMAT "%s: "
1.349 moko 345: #define PA_COMMENT_TYPE_FORMAT "%s [%s]"
346:
1.269 paf 347: #define PA_ORIGIN_FILE_POS_FORMAT "%s(%d:%d): "
348: #define PA_SOURCE_FORMAT "'%s' "
1.349 moko 349:
350: #define PA_ORIGIN_FILE_POS_VALUE file_list[details.origin.file_no].cstr(), 1+details.origin.line, 1+details.origin.col,
351: #define PA_SOURCE_VALUE details.problem_source->cstr(),
352:
353: #define EXCEPTION_CSTR(f1,v1,f2,v2) \
354: snprintf(result, MAX_STRING, \
355: PA_URI_FORMAT \
356: f1 f2 \
357: PA_COMMENT_TYPE_FORMAT, \
358: request_info.uri, \
359: v1 v2 \
360: e.comment(), e.type() \
361: );
362:
1.269 paf 363: char* result=new(PointerFreeGC) char[MAX_STRING];
364:
365: if(details.problem_source) { // do we know the guy?
1.349 moko 366: if(details.origin.file_no) // do whe know where he came from?
367: EXCEPTION_CSTR(PA_ORIGIN_FILE_POS_FORMAT, PA_ORIGIN_FILE_POS_VALUE, PA_SOURCE_FORMAT, PA_SOURCE_VALUE)
368: else
369: EXCEPTION_CSTR(PA_SOURCE_FORMAT, PA_SOURCE_VALUE,,)
370: } else {
371: if(details.origin.file_no) // do whe know where he came from?
372: EXCEPTION_CSTR(PA_ORIGIN_FILE_POS_FORMAT, PA_ORIGIN_FILE_POS_VALUE,,)
373: else
374: EXCEPTION_CSTR(,,,)
375: }
1.269 paf 376:
377: return result;
378: }
1.272 paf 379:
380: void Request::configure() {
381: // configure admin options if not configured yet
382: if(!configure_admin_done)
383: configure_admin(main_class);
384:
385: // configure not-admin=user options
386: methoded_array().configure_user(*this);
387:
388: // $MAIN:MIME-TYPES
1.308 misha 389: if(Value* element=main_class.get_element(mime_types_name))
1.272 paf 390: if(Table *table=element->get_table())
391: mime_types=table;
392: }
1.64 paf 393: /**
394: load MAIN class, execute @main.
395: MAIN class consists of all the auto.p files we'd manage to find
396: plus
397: the file user requested us to process
398: all located classes become children of one another,
399: composing class we name 'MAIN'
1.180 paf 400:
401: @test log stack trace
402:
1.64 paf 403: */
1.248 paf 404: void Request::core(const char* config_filespec, bool config_fail_on_read_problem, bool header_only) {
1.169 parser 405: try {
1.211 paf 406: // loading config
407: if(config_filespec) {
1.248 paf 408: const String& filespec=*new String(config_filespec);
1.366 moko 409: use_file_directly(main_class, filespec, config_fail_on_read_problem, true /*file must exist if 'fail on read problem' not set*/);
1.29 paf 410: }
1.8 paf 411:
1.338 moko 412: // filling mail received
413: mail.fill_received(*this);
414:
1.72 paf 415: // loading auto.p files from document_root/..
416: // to the one beside requested file.
417: // all assigned bases from upper dir
418: {
1.248 paf 419: const char* after=request_info.path_translated;
420: size_t drlen=strlen(request_info.document_root);
421: if(memcmp(after, request_info.document_root, drlen)==0) {
1.115 paf 422: after+=drlen;
423: if(after[-1]=='/')
424: --after;
425: }
426:
1.248 paf 427: while(const char* before=strchr(after, '/')) {
428: String& sfile_spec=*new String;
429: if(after!=request_info.path_translated) {
1.366 moko 430: sfile_spec.append_strdup(request_info.path_translated, before-request_info.path_translated, String::L_CLEAN);
1.152 parser 431: sfile_spec << "/" AUTO_FILE_NAME;
432:
1.366 moko 433: use_file_directly(main_class, sfile_spec, true /*fail on read problem*/, false /*but ignore absence, sole user*/);
1.115 paf 434: }
1.317 misha 435: for(after=before+1;*after=='/';after++);
1.72 paf 436: }
437: }
1.34 paf 438:
1.272 paf 439: try {
440: // compile requested file
441: String& spath_translated=*new String;
442: spath_translated.append_help_length(request_info.path_translated, 0, String::L_TAINTED);
1.318 misha 443: use_file_directly(main_class, spath_translated);
1.272 paf 444:
445: configure();
446: } catch(...) {
447: configure(); // configure anyway, useful in @unhandled_exception [say, if they would want to mail by SMTP something]
448: rethrow;
449: }
1.25 paf 450:
451: // execute @main[]
1.248 paf 452: const String* body_string=execute_virtual_method(main_class, main_method_name);
1.41 paf 453: if(!body_string)
1.366 moko 454: throw Exception(PARSER_RUNTIME, 0, "'" MAIN_METHOD_NAME "' method not found");
1.79 paf 455:
1.250 paf 456: // extract response body
1.344 moko 457: Value* body_value=response.fields().get(download_name_upper); // $response:download?
1.250 paf 458: bool as_attachment=body_value!=0;
459: if(!body_value)
1.344 moko 460: body_value=response.fields().get(body_name_upper); // $response:body
1.250 paf 461: if(!body_value)
462: body_value=new VString(*body_string); // just result of ^main[]
463:
1.119 paf 464: // @postprocess
1.308 misha 465: if(Value* value=main_class.get_element(post_process_method_name))
1.248 paf 466: if(Junction* junction=value->get_junction())
1.91 paf 467: if(const Method *method=junction->method) {
468: // preparing to pass parameters to
1.119 paf 469: // @postprocess[data]
1.363 moko 470: METHOD_FRAME_ACTION(*method, 0 /*no parent*/, main_class, {
471: frame.store_params(&body_value, 1);
472: call(frame);
473: body_value=&frame.result();
474: });
1.91 paf 475: }
1.90 paf 476:
1.303 misha 477: VFile* body_file=body_value->as_vfile(flang, &charsets);
1.41 paf 478:
1.45 paf 479: // OK. write out the result
1.248 paf 480: output_result(body_file, header_only, as_attachment);
1.183 paf 481:
1.171 parser 482: } catch(const Exception& e) { // request handling problem
1.268 paf 483: try {
1.76 paf 484: // we're returning not result, but error explanation
1.269 paf 485:
486: Request::Exception_details details=get_details(e);
487: const char* exception_cstr=get_exception_cstr(e, details);
1.258 paf 488:
489: // reset language to default
490: flang=fdefault_lang;
491:
492: // reset response
493: response.fields().clear();
494:
495: // this is what we'd return in $response:body
496: const String* body_string=0;
497:
498: // maybe we'd be lucky enough as to report an error
499: // in a gracefull way...
1.308 misha 500: if(Value* value=main_class.get_element(*new String(UNHANDLED_EXCEPTION_METHOD_NAME))) {
1.258 paf 501: if(Junction* junction=value->get_junction()) {
502: if(const Method *method=junction->method) {
1.287 misha 503: // preparing to pass parameters to
504: // @unhandled_exception[exception;stack]
505:
506: // $stack[^table::create{name file lineno colno}]
507: Table::columns_type stack_trace_columns(new ArrayString);
508: *stack_trace_columns+=new String("name");
509: *stack_trace_columns+=new String("file");
510: *stack_trace_columns+=new String("lineno");
511: *stack_trace_columns+=new String("colno");
512: Table& stack_trace=*new Table(stack_trace_columns);
513: if(!exception_trace.is_empty()/*signed!*/)
514: for(size_t i=exception_trace.bottom_index(); i<exception_trace.top_index(); i++) {
515: Trace trace=exception_trace.get(i);
516: Table::element_type row(new ArrayString);
517:
518: *row+=trace.name(); // name column
519: Operation::Origin origin=trace.origin();
520: if(origin.file_no) {
521: *row+=new String(file_list[origin.file_no], String::L_TAINTED); // 'file' column
522: *row+=new String(String::Body::Format(1+origin.line), String::L_CLEAN); // 'lineno' column
523: *row+=new String(String::Body::Format(1+origin.col), String::L_CLEAN); // 'colno' column
524: }
525: stack_trace+=row;
526: }
527:
1.323 moko 528: // future $response:body=
529: // execute ^unhandled_exception[exception;stack]
530: exception_trace.clear(); // forget all about previous life, in case there would be error inside of this method, error handled would not be mislead by old stack contents (see extract_origin)
531:
1.300 misha 532: Value *params[]={&details.vhash, new VTable(&stack_trace)};
1.363 moko 533: METHOD_FRAME_ACTION(*method, 0 /*no caller*/, main_class, {
534: frame.store_params(params, 2);
535: call(frame);
536: body_string=&frame.result().as_string();
537: });
1.233 paf 538: }
1.30 paf 539: }
1.258 paf 540: }
541:
542: if(!body_string) { // couldn't report an error beautifully?
543: // doing that ugly
544:
545: // future $response:content-type
1.344 moko 546: response.fields().put(content_type_name_upper, new VString(*new String(UNHANDLED_EXCEPTION_CONTENT_TYPE)));
1.258 paf 547: // future $response:body
1.269 paf 548: body_string=new String(exception_cstr);
1.258 paf 549: }
1.41 paf 550:
1.258 paf 551: VString body_vstring(*body_string);
1.303 misha 552: VFile* body_file=body_vstring.as_vfile(flang, &charsets);
1.90 paf 553:
1.273 paf 554: // conditionally log it
555: Value* vhandled=details.vhash.hash().get(exception_handled_part_name);
556: if(!vhandled || !vhandled->as_bool()) {
557: SAPI::log(sapi_info, "%s", exception_cstr);
558: }
559:
1.258 paf 560: // ERROR. write it out
561: output_result(body_file, header_only, false);
1.287 misha 562:
1.273 paf 563: } catch(const Exception& e) { // exception in unhandled exception
1.269 paf 564: Request::Exception_details details=get_details(e);
565: const char* exception_cstr=get_exception_cstr(e, details);
1.273 paf 566: // unconditionally log the beast
567: SAPI::log(sapi_info, "%s", exception_cstr);
1.269 paf 568:
1.366 moko 569: throw Exception(0, 0, "in %s", exception_cstr);
1.268 paf 570: }
1.1 paf 571: }
572: }
573:
1.266 paf 574: uint Request::register_file(String::Body file_spec) {
1.248 paf 575: file_list+=file_spec;
576: return file_list.count()-1;
577: }
578:
1.366 moko 579: void Request::use_file_directly(VStateless_class& aclass, const String& file_spec, bool fail_on_read_problem, bool fail_on_file_absence) {
1.73 paf 580: // cyclic dependence check
1.318 misha 581: if(used_files.get(file_spec))
1.248 paf 582: return;
1.318 misha 583: used_files.put(file_spec, true);
584:
585: if(fail_on_read_problem && !fail_on_file_absence) // ignore file absence if asked for
586: if(!entry_exists(file_spec))
587: return;
588:
589: if(const char* source=file_read_text(charsets, file_spec, fail_on_read_problem))
590: use_buf(aclass, source, 0, register_file(file_spec));
591: }
592:
593:
1.349 moko 594: void Request::use_file(VStateless_class& aclass, const String& file_name, const String* use_filespec/*absolute*/) {
1.326 misha 595: if(file_name.is_empty())
1.366 moko 596: throw Exception(PARSER_RUNTIME, 0, "usage failed - no filename was specified");
1.326 misha 597:
1.318 misha 598: const String* filespec=0;
599:
600: if(file_name.first_char()=='/') //absolute path? [no need to scan MAIN:CLASS_PATH]
601: filespec=&absolute(file_name);
602: else if(use_filespec){ // search in current dir first
1.331 misha 603: size_t last_slash_pos=use_filespec->strrpbrk("/");
604: if(last_slash_pos!=STRING_NOT_FOUND)
605: filespec=file_exist(use_filespec->mid(0, last_slash_pos), file_name); // found in current dir?
1.318 misha 606: }
607:
608: if(!filespec){
609: // prevent multiple scan CLASS_PATH for searching one file
610: if(searched_along_class_path.get(file_name))
611: return;
612: searched_along_class_path.put(file_name, true);
1.308 misha 613: if(Value* element=main_class.get_element(class_path_name)) {
1.233 paf 614: if(element->is_string()) {
1.318 misha 615: filespec=file_exist(absolute(element->as_string()), file_name); // found at class_path?
1.233 paf 616: } else if(Table *table=element->get_table()) {
1.318 misha 617: for(size_t i=table->count(); i--; ) {
1.248 paf 618: const String& path=*(*table->get(i))[0];
1.318 misha 619: if(filespec=file_exist(absolute(path), file_name))
1.233 paf 620: break; // found along class_path
621: }
622: } else
1.366 moko 623: throw Exception(PARSER_RUNTIME, 0, "$" CLASS_PATH_NAME " must be string or table");
1.318 misha 624: if(!filespec)
1.366 moko 625: throw Exception(PARSER_RUNTIME, &file_name, "not found along $" MAIN_CLASS_NAME ":" CLASS_PATH_NAME);
1.318 misha 626: } else
1.366 moko 627: throw Exception(PARSER_RUNTIME, &file_name, "usage failed - no $" MAIN_CLASS_NAME ":" CLASS_PATH_NAME " were specified");
1.148 parser 628: }
1.230 paf 629:
1.318 misha 630: use_file_directly(aclass, *filespec);
1.16 paf 631: }
632:
1.364 moko 633: void Request::use_file(const String& file_name, const String* use_filespec/*absolute*/, Operation::Origin origin) {
1.349 moko 634: static String use("USE");
635: try {
1.364 moko 636: static VHash* voptions=new VHash();
1.375 ! moko 637: if(const Method *method=main_class.get_element_method(use_method_name)){
1.364 moko 638: Value *params[]={new VString(file_name), voptions};
639: voptions->hash().put(origin_key, new VString(*use_filespec));
640:
641: CONSTRUCTOR_FRAME_ACTION(*method, 0 /*no parent*/, main_class, {
642: frame.store_params(params, 2);
643: // we don't need the result
644: call(frame);
645: });
646: }
1.349 moko 647: } catch (...) {
648: exception_trace.push(Trace(&use, origin));
649: rethrow;
650: }
651: }
1.208 paf 652:
1.358 moko 653: void Request::use_buf(VStateless_class& aclass, const char* source, const String* main_alias, uint file_no, int line_no_offset) {
654: // temporary zero @conf to avoid it second execution
1.248 paf 655: Temp_method temp_method_conf(aclass, conf_method_name, 0);
1.358 moko 656: // temporary zero @auto to avoid it second execution
1.248 paf 657: Temp_method temp_method_auto(aclass, auto_method_name, 0);
1.233 paf 658:
1.295 misha 659: // compile loaded classes
660: ArrayClass& cclasses=compile(&aclass, source, main_alias, file_no, line_no_offset);
1.212 paf 661:
1.248 paf 662: VString* vfilespec=
663: new VString(*new String(file_list[file_no], String::L_TAINTED));
1.295 misha 664:
665: for(size_t i=0; i<cclasses.count(); i++){
666: VStateless_class& cclass=*cclasses.get(i);
1.296 misha 667:
668: // locate and execute possible @conf[] static
1.358 moko 669: Execute_nonvirtual_method_result executed=execute_nonvirtual_method(cclass, conf_method_name, vfilespec, false/*no string result needed*/);
1.295 misha 670: if(executed.method)
671: configure_admin(cclass/*, executed.method->name*/);
672:
673: // locate and execute possible @auto[] static
1.358 moko 674: execute_nonvirtual_method(cclass, auto_method_name, vfilespec, false/*no result needed*/);
1.336 moko 675:
676: cclass.enable_default_setter();
1.295 misha 677: }
1.19 paf 678: }
679:
1.248 paf 680: const String& Request::relative(const char* apath, const String& relative_name) {
1.341 moko 681: char *hpath=pa_strdup(apath);
1.248 paf 682: String& result=*new String;
683: if(rsplit(hpath, '/')) // if something/splitted
1.217 paf 684: result << hpath << "/";
1.248 paf 685: result << relative_name;
686: return result;
1.19 paf 687: }
688:
1.77 paf 689: const String& Request::absolute(const String& relative_name) {
1.217 paf 690: if(relative_name.first_char()=='/') {
1.341 moko 691: String& result=*new String(pa_strdup(request_info.document_root));
1.104 paf 692: result << relative_name;
1.19 paf 693: return result;
694: } else
1.248 paf 695: if(relative_name.pos("://")!=STRING_NOT_FOUND // something like "http://xxx"
1.247 paf 696: #ifdef WIN32
697: || relative_name.pos(":")==1 // DRIVE:
698: || relative_name.starts_with("\\\\") // UNC1
699: || relative_name.starts_with("//") // UNC2
700: #endif
701: )
702: return relative_name;
703: else
1.248 paf 704: return relative(request_info.path_translated, relative_name);
1.1 paf 705: }
1.45 paf 706:
1.267 paf 707: #ifndef DOXYGEN
708: class Add_header_attribute_info
709: {
710: public:
711: Add_header_attribute_info(Request& ar) : r(ar), add_last_modified(true) {}
712: Request& r;
713: bool add_last_modified;
714: };
715: #endif
1.344 moko 716: static void add_header_attribute(HashStringValue::key_type name, HashStringValue::value_type value, Add_header_attribute_info* info) {
717: if(name==BODY_NAME_UPPER || name==DOWNLOAD_NAME_UPPER || name==CHARSET_NAME_UPPER)
1.101 paf 718: return;
1.290 misha 719:
1.345 moko 720: if(name==LAST_MODIFIED_NAME_UPPER)
721: info->add_last_modified=false;
722:
1.316 misha 723: const char* aname=String(name, String::L_URI).untaint_and_transcode_cstr(String::L_URI, &info->r.charsets);
1.101 paf 724:
1.267 paf 725: SAPI::add_header_attribute(info->r.sapi_info,
1.345 moko 726: aname,
1.316 misha 727: attributed_meaning_to_string(*value, String::L_URI, false).untaint_and_transcode_cstr(String::L_URI, &info->r.charsets)
1.303 misha 728: );
1.267 paf 729: }
730:
1.366 moko 731: static void output_sole_piece(Request& r, bool header_only, VFile& body_file, Value* body_file_content_type) {
1.267 paf 732: // transcode text body when "text/*" or simple result
733: String::C output(body_file.value_ptr(), body_file.value_size());
734: if(!body_file_content_type/*vstring.as_vfile*/ || body_file_content_type->as_string().pos("text/")==0)
1.366 moko 735: output=Charset::transcode(output, r.charsets.source(), r.charsets.client());
1.267 paf 736:
1.311 misha 737: // prepare header: Content-Length
738: SAPI::add_header_attribute(r.sapi_info, HTTP_CONTENT_LENGTH, format(output.length, "%u"));
1.267 paf 739:
740: // send header
741: SAPI::send_header(r.sapi_info);
742:
743: // send body
744: if(!header_only)
745: SAPI::send_body(r.sapi_info, output.str, output.length);
746: }
747:
748: #ifndef DOXYGEN
749: struct Range
750: {
751: size_t start;
752: size_t end;
753: };
754: #endif
1.313 misha 755: static void parse_range(const String* s, Array<Range> &ar) {
1.267 paf 756: const char *p = s->cstr();
757: if(s->starts_with("bytes="))
758: p += 6;
759: Range r;
760: while(*p){
761: r.start = (size_t)-1;
762: r.end = (size_t)-1;
763: if(*p >= '0' && *p <= '9'){
764: r.start = atol(p);
765: while(*p>='0' && *p<='9') ++p;
766: }
767: if(*p++ != '-') break;
768: if(*p >= '0' && *p <= '9'){
769: r.end = atol(p);
770: while(*p>='0' && *p<='9') ++p;
771: }
772: if(*p == ',') ++p;
773: ar += r;
774: }
1.101 paf 775: }
1.267 paf 776:
1.366 moko 777: static void output_pieces(Request& r, bool header_only, const String& filename, size_t content_length, Value& date, bool add_last_modified) {
1.315 misha 778: SAPI::add_header_attribute(r.sapi_info, "accept-ranges", "bytes");
1.270 paf 779:
1.267 paf 780: const size_t BUFSIZE = 10*0x400;
781: char buf[BUFSIZE];
1.339 moko 782: const char *range = SAPI::Env::get(r.sapi_info, "HTTP_RANGE");
1.267 paf 783: size_t offset=0;
784: size_t part_length=content_length;
785: if(range){
786: Array<Range> ar;
787: parse_range(new String(range), ar);
788: size_t count = ar.count();
789: if(count == 1){
790: Range &rg = ar.get_ref(0);
791: if(rg.start == (size_t)-1 && rg.end == (size_t)-1){
1.311 misha 792: SAPI::add_header_attribute(r.sapi_info, HTTP_STATUS, "416 Requested Range Not Satisfiable");
1.267 paf 793: return;
794: }
795: if(rg.start == (size_t)-1 && rg.end != (size_t)-1){
796: rg.start = content_length - rg.end;
797: rg.end = content_length;
798: offset += rg.start;
799: part_length = rg.end-rg.start;
800: }else if(rg.start != (size_t)-1 && rg.end == (size_t)-1){
801: rg.end = content_length-1;
802: offset += rg.start;
803: part_length -= rg.start;
804: }
805: if(part_length == 0){
1.311 misha 806: SAPI::add_header_attribute(r.sapi_info, HTTP_STATUS, "204 No Content");
1.267 paf 807: return;
808: }
1.311 misha 809: SAPI::add_header_attribute(r.sapi_info, HTTP_STATUS, "206 Partial Content");
1.267 paf 810: snprintf(buf, BUFSIZE, "bytes %u-%u/%u", rg.start, rg.end, content_length);
1.315 misha 811: SAPI::add_header_attribute(r.sapi_info, "content-range", buf);
1.267 paf 812: }else if(count != 0){
1.311 misha 813: SAPI::add_header_attribute(r.sapi_info, HTTP_STATUS, "501 Not Implemented");
1.267 paf 814: return;
815: }
816: }
817:
818:
1.311 misha 819: SAPI::add_header_attribute(r.sapi_info, HTTP_CONTENT_LENGTH, format(part_length, "%u"));
1.267 paf 820:
1.314 misha 821: if(add_last_modified)
1.315 misha 822: SAPI::add_header_attribute(r.sapi_info, "last-modified", attributed_meaning_to_string(date, String::L_AS_IS, true).cstr());
1.314 misha 823:
1.267 paf 824: SAPI::send_header(r.sapi_info);
825:
826: const String& filespec=r.absolute(filename);
827:
828: size_t sent = 0;
829: if(!header_only){
830: size_t to_read = 0;
831: size_t size = 0;
832: do{
833: to_read = part_length<BUFSIZE?part_length:BUFSIZE;
834: File_read_result read_result=file_read(r.charsets, filespec,
835: false /*as text*/, 0/*params*/, true/*fail on problem*/,
836: buf, offset, to_read);
837: to_read=read_result.length;
838: if(to_read == 0)
839: break;
840: offset += to_read;
841:
842: size = SAPI::send_body(r.sapi_info, read_result.str, to_read);
843: sent += size;
844: if(size != to_read)
845: break;
846: part_length -= to_read;
847: }while(part_length);
848: }
849: }
850:
1.248 paf 851: void Request::output_result(VFile* body_file, bool header_only, bool as_attachment) {
1.51 paf 852: // header: cookies
1.248 paf 853: cookie.output_result(sapi_info);
1.51 paf 854:
1.314 misha 855: // _file_ content-type might be specified
1.267 paf 856: Value* body_file_content_type=body_file->fields().get(content_type_name);
1.92 paf 857:
1.314 misha 858: // Content-Disposition
1.267 paf 859: Value* vfile_name=body_file->fields().get(name_name);
860: if(!vfile_name) {
861: vfile_name=body_file->fields().get(response_body_file_name);
1.313 misha 862: if(vfile_name) {
863: char* name_cstr=vfile_name->as_string().cstrm();
1.274 paf 864: if(char *after_slash=rsplit(name_cstr, '\\'))
865: name_cstr=after_slash;
866: if(char *after_slash=rsplit(name_cstr, '/'))
867: name_cstr=after_slash;
1.327 misha 868: vfile_name=new VString(*new String(name_cstr));
1.274 paf 869: }
1.267 paf 870: }
871: if(vfile_name) {
872: const String& sfile_name=vfile_name->as_string();
873: if(sfile_name!=NONAME_DAT) {
1.283 misha 874: VHash& hash=*new VHash();
875: HashStringValue &h=hash.hash();
1.288 misha 876: h.put(value_name, new VString( as_attachment ? content_disposition_attachment : content_disposition_inline ));
1.343 moko 877: h.put(content_disposition_filename_name, new VString(*new String(sfile_name, String::L_HTTP_HEADER)));
1.283 misha 878:
1.344 moko 879: response.fields().put(content_disposition_name_upper, &hash);
1.267 paf 880:
881: if(!body_file_content_type)
882: body_file_content_type=new VString(mime_type_of(sfile_name.cstr()));
1.111 paf 883: }
1.267 paf 884: }
885:
1.312 misha 886: // set Content-Type
1.314 misha 887: if(body_file_content_type) {
888: // body file content type
1.344 moko 889: response.fields().put(content_type_name_upper, body_file_content_type);
1.314 misha 890: } else {
891: // default content type
1.344 moko 892: response.fields().put_dont_replace(content_type_name_upper, new VString(*new String(DEFAULT_CONTENT_TYPE)));
1.314 misha 893: }
1.312 misha 894:
1.314 misha 895: // prepare header: $response:fields without :body, :download and :charset
1.267 paf 896: Add_header_attribute_info info(*this);
1.281 paf 897: response.fields().for_each<Add_header_attribute_info*>(add_header_attribute, &info);
1.50 paf 898:
1.267 paf 899: if(Value* vresponse_body_file=body_file->fields().get(response_body_file_name)) {
1.314 misha 900: // $response:[download|body][$.file[filespec]] -- optput specified file
1.267 paf 901: const String& sresponse_body_file=vresponse_body_file->as_string();
1.367 moko 902: uint64_t content_length=0;
1.267 paf 903: time_t atime=0, mtime=0, ctime=0;
1.366 moko 904: file_stat(absolute(sresponse_body_file), content_length, atime, mtime, ctime);
1.267 paf 905:
906: VDate* vdate=0;
907: if(Value* v=body_file->fields().get("mdate")) {
1.308 misha 908: if(Value* vdatep=v->as(VDATE_TYPE))
1.267 paf 909: vdate=static_cast<VDate*>(vdatep);
910: else
1.286 misha 911: throw Exception(PARSER_RUNTIME, 0, "mdate must be a date");
1.267 paf 912: }
913: if(!vdate)
1.346 moko 914: vdate=new VDate((pa_time_t)mtime);
1.62 paf 915:
1.368 moko 916: output_pieces(*this, header_only, sresponse_body_file, (size_t)content_length, *vdate, info.add_last_modified);
1.267 paf 917: } else {
1.314 misha 918: if(body_file_content_type)
919: if(HashStringValue *hash=body_file_content_type->get_hash())
920: body_file_content_type=hash->get(value_name);
921:
1.366 moko 922: output_sole_piece(*this, header_only, *body_file, body_file_content_type);
1.267 paf 923: }
1.50 paf 924: }
1.104 paf 925:
1.328 misha 926: const String& Request::mime_type_of(const String* file_name) {
927: return mime_type_of(file_name?file_name->taint_cstr(String::L_FILE_SPEC):0);
928: }
929:
1.248 paf 930: const String& Request::mime_type_of(const char* user_file_name_cstr) {
1.104 paf 931: if(mime_types)
1.248 paf 932: if(const char* cext=strrchr(user_file_name_cstr, '.')) {
933: String sext(++cext);
1.246 paf 934: Table::Action_options options;
1.342 moko 935: if(mime_types->locate(0, sext.change_case(charsets.source(), String::CC_LOWER), options)) {
1.313 misha 936: if(const String* result=mime_types->item(1))
937: return *result;
1.104 paf 938: else
1.366 moko 939: throw Exception(PARSER_RUNTIME, 0, MIME_TYPES_NAME " table column elements must not be empty");
1.342 moko 940: }
1.104 paf 941: }
1.248 paf 942:
943: return *new String("application/octet-stream");
944: }
945:
1.365 moko 946: const String* Request::get_used_filespec(uint file_no){
1.318 misha 947: if(file_no < file_list.count())
948: return new String(file_list[file_no], String::L_TAINTED);
949: return 0;
950: }
951:
1.248 paf 952: #ifdef XML
1.280 paf 953: xmlChar* Request::transcode(const String& s) {
1.248 paf 954: return charsets.source().transcode(s);
955: }
956:
1.280 paf 957: xmlChar* Request::transcode(const String::Body s) {
1.248 paf 958: return charsets.source().transcode(s);
959: }
960:
1.280 paf 961: const String& Request::transcode(const xmlChar* s) {
1.248 paf 962: return charsets.source().transcode(s);
1.233 paf 963: }
1.248 paf 964: #endif
965:
1.349 moko 966: Request::Exception_details Request::get_details(const Exception& e) {
967: const String* problem_source=e.problem_source();
968: VHash& vhash=*new VHash; HashStringValue& hash=vhash.hash();
969: Operation::Origin origin={0, 0, 0};
1.248 paf 970:
1.349 moko 971: if(!exception_trace.is_empty()) {
972: Trace bottom=exception_trace.bottom_value();
1.350 moko 973: origin=bottom.origin();
974: if(!problem_source) { // we don't know who trigged the bug
975: problem_source=bottom.name(); // we usually know source of next-from-throw-point exception did that
976: exception_trace.set_bottom_index(exception_trace.bottom_index()+1);
977: } else if (bottom.name()==problem_source) { // it is that same guy?
1.349 moko 978: exception_trace.set_bottom_index(exception_trace.bottom_index()+1); // throw away that trace
979: } else {
980: // stack top contains not us, leaving intact to help ^throw
1.279 paf 981: }
1.248 paf 982: }
983:
984: // $.type
985: if(const char* type=e.type(true))
986: hash.put(exception_type_part_name, new VString(*new String(type)));
987:
988: // $.source
1.349 moko 989: if(problem_source)
990: hash.put(exception_source_part_name, new VString(*new String(*problem_source, String::L_TAINTED)));
1.248 paf 991:
1.349 moko 992: // $.file $.lineno $.colno
993: if(origin.file_no){
1.347 moko 994: hash.put("file", new VString(*new String(file_list[origin.file_no], String::L_TAINTED)));
995: hash.put("lineno", new VInt(1+origin.line));
996: hash.put("colno", new VInt(1+origin.col));
1.248 paf 997: }
998:
999: // $.comment
1000: if(const char* comment=e.comment(true))
1.349 moko 1001: hash.put(exception_comment_part_name, new VString(*new String(comment, String::L_TAINTED)));
1.248 paf 1002:
1003: // $.handled(0)
1.299 misha 1004: hash.put(exception_handled_part_name, &VBool::get(false));
1.233 paf 1005:
1.349 moko 1006: return Request::Exception_details(origin, problem_source, vhash);
1.133 parser 1007: }
1.337 moko 1008:
1009: Temp_value_element::Temp_value_element(Request& arequest, Value& awhere, const String& aname, Value* awhat) :
1010: frequest(arequest),
1011: fwhere(awhere),
1012: fname(aname),
1013: saved(awhere.get_element(aname))
1014: {
1015: Junction* junction;
1016: if(saved && (junction=saved->get_junction()) && junction->is_getter)
1017: saved=0;
1018: frequest.put_element(fwhere, aname, awhat);
1019: }
1020:
1021: Temp_value_element::~Temp_value_element() {
1022: frequest.put_element(fwhere, fname, saved ? saved : VVoid::get());
1023: }
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